html,body,#app{
    height: 100%;
    font-size: 14px;
    margin: 0;
    padding: 0;
    min-width: 320px;
}
h1,h2,h3,h4,h5,h6{
    margin: 0;padding: 0;
}
p{
    margin: 0;padding: 0;
}